Spot welding method and spot welding equipment for metal machining

Abstract

The invention discloses a spot welding method and spot welding equipment for metal machining. The method comprises the steps that a spot welding machine power source is started, welding parameters including welding current, power-on time, dwell time, electrode pressure and the like are input through a control system, the parameters need to be matched with workpiece materials and plate thickness, a workpiece to be welded is placed on a spot welding machine tool table, the position of the workpiece is fixed through a positioning clamp, it is ensured that a welding point is aligned with the center of an electrode, and deviation is avoided; the spot welding machine driving mechanism drives the electrode arm to move, so that the electrode tip is attached to the welding surface of the workpiece; and starting a pressurization system, applying preset pre-pressure, discharging air in a workpiece contact gap, and ensuring uniform electric conduction. By arranging the adjusting mechanism, the collecting mechanism is close to the welding area all the time, it is guaranteed that waste gas and welding slag generated during spot welding are collected, the problem of omission caused by the improper height of the collecting mechanism is avoided, and diffusion of the waste gas and the welding slag is reduced.

Description

Technical Field

[0001] This invention relates to the field of spot welding technology in metal processing, specifically to a spot welding method and spot welding equipment for metal processing. Background Technology

[0002] Spot welding equipment for sheet metal processing is a specialized device adapted to the spot welding needs of thin sheet metal. Its core functionality is to achieve efficient and low-deformation spot connection of sheet metal parts by controlling pressure, current, and time. The mainstream types are pneumatic, medium-frequency inverter, and robotic spot welding workstations, which are adapted to different production capacity and precision requirements. The equipment mainly consists of an electrode system, a main circuit module, a pressure transmission device, a control system, and a machine body structure. Among them, the pneumatic type has low cost and simple operation, and is suitable for small and medium batch processing. The medium-frequency inverter type has precise current control and minimal welding deformation, and is suitable for high-precision sheet metal.

[0003] During spot welding in metal processing, waste gas and welding slag are generated, which need to be collected and treated separately. When the welding slag is collected and discharged in a unified manner, some of the welding slag will enter the waste gas collection component with the flow of waste gas. At the same time, when using activated carbon to filter waste gas, the long-term adsorption of waste gas by activated carbon will cause excessive impurities to adhere to the surface. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides the following technical solution: a spot welding method and spot welding equipment for metal processing, comprising the following steps: S1: Equipment Start-up and Parameter Setting: Turn on the spot welding machine power and input welding parameters through the control system, including welding current, energizing time, holding time, electrode pressure, etc. The parameters must match the workpiece material and plate thickness. S2: Workpiece loading and positioning: Place the workpiece to be welded on the tooling table of the spot welding machine, fix the position of the workpiece with the positioning fixture, and ensure that the welding point is aligned with the center of the electrode to avoid displacement; S3: Electrode approach and pre-pressure: The spot welding machine drive mechanism moves the electrode arm to make the electrode head fit against the workpiece welding surface; the pressurization system is activated to apply the preset pre-pressure, expel the air from the workpiece contact gap, and ensure uniform conductivity; S4: Pressure Confirmation and Power-On Trigger: After the pressure sensor detects that the electrode pressure meets the standard, it sends a signal to the control system; after receiving the signal, the system triggers the welding circuit to be connected, and a large current is conducted through the electrode to the workpiece contact point; S5: Melt nugget formation and timing control: Current generates heat through contact resistance, causing localized melting of the workpiece to form a melt nugget; the control system monitors the energizing time in real time and automatically cuts off the current after the preset duration is reached; S6: Pressure Holding Cooling and Signal Feedback: After power failure, the electrode maintains constant pressure, allowing the molten nugget to solidify under pressure; after cooling is complete, the pressure holding system releases pressure and sends a "complete" signal to the control system; S7: Electrode Reset and Workpiece Release: The drive mechanism moves the electrode arm back to the initial position, and the positioning fixture is released; S8: Equipment Standby and Quality Re-inspection: The spot welding machine returns to standby mode, ready for the next welding operation.

[0005] The spot welding machine includes a main body, an operation panel fixedly connected to the side of the main body, a drive component fixedly connected to the side of the main body, a welding component fixedly connected to the side of the main body, the output end of the drive component fixedly connected to the top of the welding component, and a support component fixedly connected to the side of the main body near the welding component. The processing component is used to collect and filter the exhaust gas and welding slag generated during spot welding. The bottom of the processing component is fixedly connected to the top of the support component. The supporting component includes a support frame and a support plate. The side of the support frame and the support plate are both fixedly connected to the side of the main body. A support rod is fixedly connected to the inner side of the support plate. The processing component includes a collection mechanism, an adjustment mechanism is fixedly connected to the bottom of the collection mechanism, a corrugated pipe is fixedly connected to the side of the collection mechanism, and a filtering mechanism is fixedly connected to the other end of the corrugated pipe. Preferably, the adjusting mechanism includes an adjusting seat, the bottom of which is fixedly connected to the top of the support frame, an adjusting block fixedly connected to the top of the adjusting seat, the inner sides of the adjusting seat and the adjusting block fixedly connected to the side of the support rod, a round shaft slidably connected to both sides of the top of the adjusting block, a top plate fixedly connected to the top of the round shaft, an adjusting plate fixedly connected to the bottom of the round shaft, a lead screw threadedly connected to the middle of the inner side of the adjusting plate, a rotating block fixedly connected to the bottom of the lead screw, the top of the lead screw rotatably connected to the bottom of the adjusting block, and the bottom of the rotating block rotatably connected to the side of the adjusting seat. Preferably, the collecting mechanism includes a collecting box, the bottom of which is fixedly connected to the top of a top plate. A mesh plate is fixedly connected to the inner side of the collecting box. A collecting cylinder is fixedly connected to the middle of the inner side of the collecting box. A baffle is fixedly connected to the side of the collecting cylinder. The side of the baffle away from the collecting cylinder is fixedly connected to the inner side of the collecting box. A driving component is fixedly connected to the side of the collecting box. A spiral blade is rotatably connected to the inner side of the collecting cylinder. The output end of the driving component is fixedly connected to one end of the spiral blade. A discharge port is provided on the side of the collecting cylinder away from the driving component. The collecting cylinder has evenly spaced feed holes on the side near the mesh plate, with the diameter of the feed holes being larger than that of the ventilation holes. Ventilation holes are evenly spaced on the side of the collecting cylinder away from the feed holes. A connecting assembly is fixedly connected to the side of the collecting cylinder near the ventilation holes. The continuous slag discharge mode of the spiral blades eliminates the need for manual cleaning, reducing operational burden and ensuring continuous operation. The suction-assisted anti-fall design during slag movement reduces secondary pollution, maintains a clean work area, and exhaust gases are filtered through a dedicated channel before being discharged, significantly reducing the diffusion of harmful gases and effectively protecting the health of operators. Preferably, the connecting assembly includes a connecting frame, the side of the connecting frame is fixedly connected to the side of the collecting cylinder near the ventilation hole, the two sides of the connecting frame are fixedly connected to the inner side of the collecting box, a connecting pipe is fixedly connected to the middle of the connecting frame, the end of the connecting pipe away from the connecting frame is fixedly connected to a corrugated pipe, and a blocking kit is fixedly connected to the inner side of the connecting pipe. Preferably, the blocking kit includes a blocking plate, the side of which is fixedly connected to the middle of the inner side of the connecting pipe, a rotating blade is rotatably connected to the side of the blocking plate, a blocking shaft is fixedly connected to the other end of the rotating blade, a cleaning rod is fixedly connected to both sides of the blocking shaft, the cleaning rod is in contact with the side of the blocking plate, and a cleaning rod is fixedly connected to both sides of the blocking shaft away from the cleaning rod. The blocking plate and the cleaning rods intercept and knock down the welding slag, preventing small welding slag from entering the corrugated pipe and the filter mechanism. Preferably, the filtration mechanism includes a filter box, the bottom of which is fixedly connected to the top of the support plate, ventilation plates fixedly connected to both sides of the filter box, a ventilation end fixedly connected to the middle of the filter box, the end of the ventilation end away from the filter box being fixedly connected to the end of the corrugated pipe away from the collection box, filter plates fixedly connected to both sides of the inner cavity of the filter box, and a contact mechanism fixedly connected to the middle of the inner cavity of the filter box. Preferably, the contact mechanism includes a contact housing, both ends of which are fixedly connected to the two sides of the inner cavity of the filter box. An air intake fan is fixedly connected to the side of the contact housing near the ventilation end, and an exhaust fan is fixedly connected to the inner side of the contact housing away from the air intake fan. Exhaust pipes are fixedly connected to both sides of the exhaust fan, and an interception housing is fixedly connected to the other end of the exhaust pipe. An installation shaft is fixedly connected to the other side of the interception housing, and the other end of the installation shaft is fixedly connected to the side of the contact housing. An interception net is fixedly connected to the inner side of the interception housing. The interception net intercepts impurities a second time, further ensuring the cleanliness of the exhaust gas and preventing trace impurities from leaking out and polluting the environment. An interception plate one is fixedly connected to the opposite ends of the air intake fan and the exhaust fan. A rotating assembly is rotatably connected between the two interception plates one. An interception plate two is fixedly connected to the inner side of the contact housing. When the exhaust fan is working, it drives the rotating assembly to rotate inside the contact housing, which can both clean the activated carbon particles and promote full contact between the exhaust gas and the activated carbon particles, thereby improving the adsorption and purification effect. Preferably, the rotating assembly includes a rotating shaft, the side of which is rotatably connected to the inner side of the second interceptor plate. Rotating rods are fixedly connected to both sides of the rotating shaft. A fixed rod is fixedly connected to the side of the rotating shaft away from the rotating rods. A sliding shaft is slidably connected to the other end of the fixed rod. A fixed shaft is fixedly connected to the other end of the sliding shaft. A scraper is fixedly connected to the other end of the fixed shaft. A connecting spring is sleeved on the sliding shaft. One end of the connecting spring is fixedly connected to the fixed rod, and the other end is fixedly connected to the fixed shaft. A second rotating blade is fixedly connected to one end of the rotating shaft. The other end of the rotating shaft is rotatably connected to the first interceptor plate. The end of the second rotating blade away from the rotating shaft is rotatably connected to another first interceptor plate.

[0006] This invention provides a spot welding method and spot welding equipment for metal processing. It has the following beneficial effects: 1. The spot welding method and equipment for metal processing are equipped with an adjustment mechanism to ensure that the collection mechanism is always close to the welding area, thereby ensuring the collection of waste gas and welding slag generated during spot welding. This avoids the problem of leakage caused by improper height of the collection mechanism and reduces the diffusion of waste gas and welding slag.

[0007] 2. The spot welding method and equipment for metal processing are equipped with a collection mechanism. The difference in diameter between the feed hole and the ventilation hole, combined with the suction guide, improves the accuracy and efficiency of slag suction and avoids slag accumulation in the collection box.

[0008] 3. The spot welding method and equipment for metal processing are equipped with a baffle assembly. The cleaning rod cleans the baffle mesh in real time to ensure smooth ventilation, ensure stable suction of the filtration mechanism, and improve the efficiency of exhaust gas treatment.

[0009] 4. The spot welding method and equipment for metal processing are equipped with a contact mechanism. The activated carbon granule layer, in conjunction with the agitation of the rotating kit, increases the contact area and contact time between the exhaust gas and the activated carbon, allowing for more thorough adsorption of impurities. The rotating kit simultaneously cleans the activated carbon, preventing granule agglomeration and blockage.

[0010] 5. The spot welding method and equipment for metal processing are equipped with a rotating assembly. The rotating rod agitates the activated carbon particles, increasing the contact area and uniformity between the exhaust gas and the activated carbon, allowing for more thorough adsorption of impurities and enhancing the exhaust gas purification effect. The scraper automatically cleans the inner side of the contact shell with centrifugal force, preventing impurities from adhering and caking for a long time. Attached Figure Description

[0011] Figure 1 This is a schematic flowchart of the spot welding method for metal processing according to the present invention; Figure 2 This is a schematic diagram of the spot welding equipment for metal processing according to the present invention; Figure 3 This is an isometric view of the present invention; Figure 4 This is a schematic diagram of the structure of the support component of the present invention; Figure 5 This is a schematic diagram of the structure of the processing component of the present invention; Figure 6 This is a schematic diagram of the adjustment mechanism of the present invention; Figure 7 This is a schematic diagram of the collection mechanism of the present invention; Figure 8 This is a schematic diagram of the structure of the collection tube of the present invention; Figure 9 This is a schematic diagram of the structure of the connecting component of the present invention; Figure 10 This is a schematic diagram of the structure of the blocking kit of the present invention; Figure 11 This is a schematic diagram of the filtration mechanism of the present invention; Figure 12 This is a schematic diagram of the contact mechanism of the present invention; Figure 13 This is a schematic diagram of the rotating kit of the present invention.

[0012] In the diagram: 1. Main body; 2. Operation panel; 3. Processing components; 31. Collection mechanism; 311. Collection box; 312. Baffle; 313. Mesh plate; 314. Driving component; 315. Collection cylinder; 316. Spiral blade; 317. Feed hole; 318. Ventilation hole; 319. Connecting assembly; 3191. Connecting frame; 3192. Connecting pipe; 3193. Baffle assembly; 31931. Baffle plate; 31932. Rotating blade one; 31933. Baffle shaft; 31934. Cleaning rod one; 31935. Cleaning rod two; 3110. Discharge port; 32. Adjustment mechanism; 321. Adjustment seat; 322. Adjustment block; 323. Top plate; 324. Round shaft; 325. Adjustment plate; 326. Rotating block; 327. Lead screw; 33. Bellows; 34. Filtering mechanism; 341, Filter box; 342, Ventilation end; 344, Filter plate; 345, Ventilation plate; 346, Contact mechanism; 3461, Contact housing; 3462, Intake unit; 3463, Exhaust fan; 3464, Exhaust duct; 3465, Interception housing; 3466, Interception net; 3467, Mounting shaft; 3468, Rotating assembly; 34681, Rotating blade two; 34682, Rotating shaft; 34683, Rotating rod; 34684, Fixed rod; 34685, Sliding shaft; 34686, Fixed shaft; 34687, Scraper; 34688, Connecting spring; 3469, Interception plate one; 3470, Interception plate two; 4. Support components; 41, Support frame; 42, Support plate; 43, Support rod; 5. Welded components; 6. Drive components. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] Example 1 Please see Figure 1 This embodiment provides a spot welding method for metal processing, including the following steps: S1: Equipment Start-up and Parameter Setting: Turn on the spot welding machine power and input welding parameters through the control system, including welding current, energizing time, holding time, electrode pressure, etc. The parameters must match the workpiece material and plate thickness. S2: Workpiece loading and positioning: Place the workpiece to be welded on the tooling table of the spot welding machine, fix the position of the workpiece with the positioning fixture, and ensure that the welding point is aligned with the center of the electrode to avoid displacement; S3: Electrode approach and pre-pressure: The spot welding machine drive mechanism moves the electrode arm to make the electrode head fit against the workpiece welding surface; the pressurization system is activated to apply the preset pre-pressure, expel the air from the workpiece contact gap, and ensure uniform conductivity; S4: Pressure Confirmation and Power-On Trigger: After the pressure sensor detects that the electrode pressure meets the standard, it sends a signal to the control system; after receiving the signal, the system triggers the welding circuit to be connected, and a large current is conducted through the electrode to the workpiece contact point; S5: Melt nugget formation and timing control: Current generates heat through contact resistance, causing localized melting of the workpiece to form a melt nugget; the control system monitors the energizing time in real time and automatically cuts off the current after the preset duration is reached; S6: Pressure Holding Cooling and Signal Feedback: After power failure, the electrode maintains constant pressure, allowing the molten nugget to solidify under pressure; after cooling is complete, the pressure holding system releases pressure and sends a "complete" signal to the control system; S7: Electrode Reset and Workpiece Release: The drive mechanism moves the electrode arm back to the initial position, and the positioning fixture is released; S8: Equipment Standby and Quality Re-inspection: The spot welding machine returns to standby mode, ready for the next welding operation.

[0015] Example 2 Please see Figures 1-4 This embodiment also provides a spot welding device for metal processing, comprising: A spot welding machine includes a main body 1, an operation panel 2 fixedly connected to the side of the main body 1, a drive component 6 fixedly connected to the side of the main body 1, a welding component 5 fixedly connected to the side of the main body 1, the output end of the drive component 6 fixedly connected to the top of the welding component 5, and a support component 4 fixedly connected to the side of the main body 1 near the welding component 5. The processing component 3 is used to collect and filter the exhaust gas and welding slag generated during spot welding. The bottom of the processing component 3 is fixedly connected to the top of the support component 4. The support component 4 includes a support frame 41 and a support plate 42. The side of the support frame 41 and the support plate 42 are both fixedly connected to the side of the main body 1. A support rod 43 is fixedly connected to the inner side of the support plate 42. Please see Figure 5 The processing component 3 includes a collection mechanism 31, an adjustment mechanism 32 is fixedly connected to the bottom of the collection mechanism 31, a bellows 33 is fixedly connected to the side of the collection mechanism 31, and a filter mechanism 34 is fixedly connected to the other end of the bellows 33. Before spot welding, the adjustment mechanism 32 needs to be adjusted according to the height of the workpiece placed on the support rod 43; At the same time, the filter mechanism 34 is turned on. Using the suction generated by its operation, the welding slag and exhaust gas generated during the spot welding process are first introduced into the collection mechanism 31. The collection mechanism 31 intercepts and collects the welding slag, while the exhaust gas enters the filter mechanism 34 through the bellows 33. After being filtered, it is discharged to avoid operators from inhaling exhaust gas for a long time and damaging their health. Please see Figure 6 The adjustment mechanism 32 includes an adjustment seat 321, the bottom of which is fixedly connected to the top of the support frame 41. An adjustment block 322 is fixedly connected to the top of the adjustment seat 321. The inner sides of the adjustment seat 321 and the adjustment block 322 are fixedly connected to the side of the support rod 43. A round shaft 324 is slidably connected to both sides of the top of the adjustment block 322. A top plate 323 is fixedly connected to the top of the round shaft 324. An adjustment plate 325 is fixedly connected to the bottom of the round shaft 324. A lead screw 327 is threadedly connected to the middle of the inner side of the adjustment plate 325. A rotating block 326 is fixedly connected to the bottom of the lead screw 327. The top of the lead screw 327 is rotatably connected to the bottom of the adjustment block 322. The bottom of the rotating block 326 is rotatably connected to the side of the adjustment seat 321. Before spot welding, the height of the collecting mechanism 31 needs to be adjusted according to the height of the workpiece; Rotating the rotating blocks 326 on both sides of the adjusting seat 321 causes the lead screw 327 to rotate between the adjusting seat 321 and the adjusting block 322, thereby driving the adjusting plate 325 to rise and fall. The adjusting plate 325 drives the top plate 323 to move synchronously through the round shaft 324. The top plate 323 drives the collecting mechanism 31 to move accordingly, and finally completes the height adaptation of the collecting mechanism 31. Please see Figures 7-8 The collection mechanism 31 includes a collection box 311, the bottom of which is fixedly connected to the top of the top plate 323. A mesh plate 313 is fixedly connected to the inner side of the collection box 311. A collection cylinder 315 is fixedly connected to the middle of the inner side of the collection box 311. A baffle 312 is fixedly connected to the side of the collection cylinder 315. The side of the baffle 312 away from the collection cylinder 315 is fixedly connected to the inner side of the collection box 311. A driving member 314 is fixedly connected to the side of the collection box 311. A rotating component 314 is rotatably connected to the inner side of the collection cylinder 315. The spiral blade 316 and the output end of the drive component 314 are fixedly connected to one end of the spiral blade 316. The collecting cylinder 315 has a discharge port 3110 on the side away from the drive component 314. The collecting cylinder 315 has a feed hole 317 evenly opened on the side near the screen plate 313. The diameter of the feed hole 317 is larger than the diameter of the ventilation hole 318. The collecting cylinder 315 has a ventilation hole 318 evenly opened on the side away from the feed hole 317. The collecting cylinder 315 has a connecting component 319 fixedly connected on the side near the ventilation hole 318. During spot welding, the filter mechanism 34 is activated to generate suction, which draws the welding exhaust gas and welding slag into the collection box 311 through the mesh plate 313. The collecting cylinder 315 has a feed hole 317 on the side near the mesh plate 313 and a ventilation hole 318 on the other side. The diameter of the feed hole 317 is larger than that of the ventilation hole 318. With the guidance of the baffle 312 and the suction of the filter mechanism 34, the welding slag is sucked into the collecting cylinder 315. Simultaneously, the drive unit 314 is activated, and its output end drives the spiral blade 316 to rotate in the collection cylinder 315, continuously pushing the welding slag to the discharge port 3110 for discharge. When the welding slag in the collection cylinder 315 moves with the spiral blade 316, it is continuously moved towards the ventilation hole 318 by the suction of the filter mechanism 34, so as to prevent the welding slag from falling from the feed hole 317 when it is discharged. The exhaust gas enters the bellows 33 through the baffle kit 3193 and is continuously transported to the filter mechanism 34 for purification before being discharged. Please see Figure 9 The connecting assembly 319 includes a connecting frame 3191. The side of the connecting frame 3191 is fixedly connected to the side of the collecting cylinder 315 near the ventilation hole 318. The two sides of the connecting frame 3191 are fixedly connected to the inside of the collecting box 311. A connecting pipe 3192 is fixedly connected to the middle of the connecting frame 3191. The end of the connecting pipe 3192 away from the connecting frame 3191 is fixedly connected to the corrugated pipe 33. A blocking kit 3193 is fixedly connected to the inside of the connecting pipe 3192. Please see Figure 10 The blocking kit 3193 includes a blocking plate 31931. The side of the blocking plate 31931 is fixedly connected to the middle of the inner side of the connecting pipe 3192. A rotating blade 31932 is rotatably connected to the side of the blocking plate 31931. A blocking shaft 31933 is fixedly connected to the other end of the rotating blade 31932. A cleaning rod 31934 is fixedly connected to both sides of the blocking shaft 31933. The cleaning rod 31934 contacts the side of the blocking plate 31931. A cleaning rod 31935 is fixedly connected to both sides of the blocking shaft 31933 away from the cleaning rod 31934. The filter mechanism 34 is activated to generate suction, continuously drawing the exhaust gas into the bellows 33 through the connecting pipe 3192, and then transporting it to the filter mechanism 34 for purification. The baffle plate 31931 filters and intercepts within the connecting pipe 3192 to prevent small welding slag mixed in the exhaust gas from entering the bellows 33. The exhaust gas flow drives the rotating blade 31932 to rotate the baffle shaft 31933 inside the baffle plate 31931. The cleaning rods 31934 on both sides of the baffle shaft 31933 simultaneously contact and rotate on the side of the baffle plate 31931 to clean impurities on the plate surface in time and prevent the mesh of the baffle plate 31931 from being blocked. In addition, a cleaning rod 31935 is provided on the side of the baffle shaft 31933 away from the cleaning rod 31934. When the welding slag passes through the connecting pipe 3192 with the exhaust gas, it can be knocked off by contact rotation to prevent the welding slag from entering the subsequent pipeline with the exhaust gas. Example 2, please refer to Figure 11 Based on Embodiment 1, the present invention provides a technical solution: The filtration mechanism 34 includes a filter box 341, the bottom of which is fixedly connected to the top of the support plate 42. Ventilation plates 345 are fixedly connected to both sides of the filter box 341. A ventilation end 342 is fixedly connected to the middle of the filter box 341. The end of the ventilation end 342 away from the filter box 341 is fixedly connected to the end of the corrugated pipe 33 away from the collection box 311. Filter plates 344 are fixedly connected to both sides of the inner cavity of the filter box 341. A contact mechanism 346 is fixedly connected to the middle of the inner cavity of the filter box 341. The contact mechanism 346 is activated, and the suction generated by its operation causes the exhaust gas continuously transported in the bellows 33 to enter the contact mechanism 346 through the ventilation end 342 for purification and filtration. The filtered gas is then filtered again through filter plate 344 and finally discharged through ventilation plate 345. Please see Figure 12 The contact mechanism 346 includes a contact housing 3461, both ends of which are fixedly connected to the sides of the inner cavity of the filter box 341. An air intake fan 3462 is fixedly connected to the side of the contact housing 3461 closest to the ventilation end 342. An exhaust fan 3463 is fixedly connected to the inner side of the contact housing 3461 away from the air intake fan 3462. Exhaust pipes 3464 are fixedly connected to both sides of the exhaust fan 3463, and an interceptor housing 3465 is fixedly connected to the other end of the exhaust pipes 3464. An installation shaft 3467 is fixedly connected to the other side of the interceptor housing 3465. The other end of the installation shaft 3467 is fixedly connected to the side of the contact housing 3461. An interceptor net 3466 is fixedly connected to the inside of the interceptor housing 3465. An interceptor plate 3469 is fixedly connected to the opposite ends of the intake fan 3462 and the exhaust fan 3463. A rotating assembly 3468 is rotatably connected between the two interceptor plates 3469. An interceptor plate 3470 is fixedly connected to the inside of the contact housing 3461. During spot welding operations, the intake fan 3462 and the exhaust fan 3463 are turned on simultaneously to work together to complete the overall collection and treatment of waste gas and welding slag. The intake fan 3462 continuously draws the exhaust gas in the bellows 33 into the contact shell 3461 through the ventilation end 342, and works with the exhaust fan 3463 to form an airflow circulation, so that the exhaust gas passes through the activated carbon granular layer between the first interceptor plate 3469 and the second interceptor plate 3470, and the impurities in the exhaust gas are filtered by the adsorption of activated carbon. The purified gas enters the interceptor housing 3465 through the exhaust pipes 3464 on both sides of the exhaust fan 3463, and is discharged after secondary purification; Please see Figure 13The rotating assembly 3468 includes a rotating shaft 34682, the side of which is rotatably connected to the inner side of the second interceptor plate 3470. Rotating rods 34683 are fixedly connected to both sides of the rotating shaft 34682. A fixing rod 34684 is fixedly connected to the side of the rotating shaft 34682 away from the rotating rods 34683. A sliding shaft 34685 is slidably connected to the other end of the fixing rod 34684. A fixing shaft 34686 is fixedly connected to the other end of the sliding shaft 34685. The other end of the fixing shaft 34686 is fixedly connected to... A scraper 34687 is attached, and a connecting spring 34688 is sleeved on the sliding shaft 34685. One end of the connecting spring 34688 is fixedly connected to the fixed rod 34684, and the other end of the connecting spring 34688 is fixedly connected to the fixed shaft 34686. One end of the rotating shaft 34682 is fixedly connected to a second rotating blade 34681, and the other end of the rotating shaft 34682 is rotatably connected to a first interceptor plate 3469. The end of the second rotating blade 34681 away from the rotating shaft 34682 is rotatably connected to another first interceptor plate 3469. When the exhaust fan 3463 is working, the suction force it generates drives the rotating blade 34681 to rotate. The rotating blade 34681 drives the rotating rod 34683 through the rotating shaft 34682 to fully agitate the activated carbon particles between the intercepting plate 3469 and the intercepting plate 3470, ensuring that the exhaust gas can fully contact the activated carbon particles when it passes through. The centrifugal force generated by the rotation of the rotating shaft 34682 causes the sliding shaft 34685 to drive the fixed shaft 34686 to slide within the fixed rod 34684. At the same time, it stretches the connecting spring 34688 sleeved on the sliding shaft 34685. The sliding shaft 34685 drives the scraper 34687 to contact and rotate with the inner side of the contact housing 3461 through the fixed shaft 34686, scraping off and cleaning the impurities attached to the inner side of the housing. After the exhaust gas enters the interceptor housing 3465 through the exhaust pipes 3464 on both sides of the exhaust fan 3463, some of the impurities that enter with the gas are intercepted and retained by the interceptor net 3466, and the purified gas is discharged through the interceptor net 3466.

[0016] Specific workflow: The control panel 2 issues a command to start the drive component 6, which in turn drives the welding component 5 to perform spot welding on the workpiece placed on the support component 4. At the same time, the processing component 3 is activated to collect and process the welding slag and exhaust gas generated during the spot welding process.

[0017] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A spot welding method for metal processing, characterized in that, Includes the following steps: S1: Equipment Start-up and Parameter Setting: Turn on the spot welding machine power and input welding parameters through the control system, including welding current, energizing time, holding time, electrode pressure, etc. The parameters must match the workpiece material and plate thickness. S2: Workpiece loading and positioning: Place the workpiece to be welded on the tooling table of the spot welding machine, fix the position of the workpiece with the positioning fixture, and ensure that the welding point is aligned with the center of the electrode to avoid displacement; S3: Electrode approach and pre-compression: The spot welding machine drive mechanism moves the electrode arm so that the electrode head is in contact with the workpiece welding surface; Start the pressurization system, apply the preset pre-pressure, and expel the air from the contact gap of the workpiece to ensure uniform conductivity; S4: Pressure Confirmation and Power-On Trigger: After the pressure sensor detects that the electrode pressure meets the standard, it sends a signal to the control system; after receiving the signal, the system triggers the welding circuit to be connected, and a large current is conducted through the electrode to the workpiece contact point; S5: Melt nugget formation and timing control: Current generates heat through contact resistance, causing localized melting of the workpiece to form a melt nugget; the control system monitors the energizing time in real time and automatically cuts off the current after the preset duration is reached; S6: Pressure Holding Cooling and Signal Feedback: After power failure, the electrode maintains constant pressure, allowing the molten nugget to solidify under pressure; after cooling is complete, the pressure holding system releases pressure and sends a "complete" signal to the control system; S7: Electrode Reset and Workpiece Release: The drive mechanism moves the electrode arm back to the initial position, and the positioning fixture is released; S8: Equipment Standby and Quality Re-inspection: The spot welding machine returns to standby mode, ready for the next welding operation.

2. A spot welding device for metal processing, comprising the spot welding method for metal processing according to claim 1, characterized in that: The spot welding machine includes a main body (1), an operation panel (2) is fixedly connected to the side of the main body (1), a drive component (6) is fixedly connected to the side of the main body (1), a welding component (5) is fixedly connected to the side of the main body (1), the output end of the drive component (6) is fixedly connected to the top of the welding component (5), and a support component (4) is fixedly connected to the side of the main body (1) near the welding component (5). The processing component (3) is used to collect and filter the exhaust gas and welding slag generated during spot welding. The bottom of the processing component (3) is fixedly connected to the top of the support component (4). The support component (4) includes a support frame (41) and a support plate (42). The side of the support frame (41) and the support plate (42) are both fixedly connected to the side of the main body (1). A support rod (43) is fixedly connected to the inner side of the support plate (42). The processing component (3) includes a collection mechanism (31), an adjustment mechanism (32) is fixedly connected to the bottom of the collection mechanism (31), a corrugated pipe (33) is fixedly connected to the side of the collection mechanism (31), and a filter mechanism (34) is fixedly connected to the other end of the corrugated pipe (33).

3. A spot welding device for metal processing according to claim 2, characterized in that: The adjustment mechanism (32) includes an adjustment seat (321), the bottom of which is fixedly connected to the top of the support frame (41), and an adjustment block (322) is fixedly connected to the top of the adjustment seat (321). The inner sides of the adjustment seat (321) and the adjustment block (322) are fixedly connected to the side of the support rod (43). Both sides of the top of the adjustment block (322) are slidably connected to a round shaft (324). The top of the round shaft (324) is fixedly connected to a top plate (323). The bottom of the round shaft (324) is fixedly connected to an adjustment plate (325). The middle of the inner side of the adjustment plate (325) is threadedly connected to a lead screw (327). The bottom of the lead screw (327) is fixedly connected to a rotating block (326). The top of the lead screw (327) is rotatably connected to the bottom of the adjustment block (322), and the bottom of the rotating block (326) is rotatably connected to the side of the adjustment seat (321).

4. A spot welding device for metal processing according to claim 2, characterized in that: The collection mechanism (31) includes a collection box (311), a mesh plate (313) fixedly connected to the inner side of the collection box (311), a collection cylinder (315) fixedly connected to the middle of the inner side of the collection box (311), a baffle (312) fixedly connected to the side of the collection cylinder (315), a driving component (314) fixedly connected to the side of the collection box (311), and a spiral blade (316) rotatably connected to the inner side of the collection cylinder (315). The output end is fixedly connected to one end of the spiral blade (316). The collecting cylinder (315) has a discharge port (3110) on the side away from the driving component (314). The collecting cylinder (315) has a feed hole (317) evenly distributed on the side near the screen plate (313). The collecting cylinder (315) has a ventilation hole (318) evenly distributed on the side away from the feed hole (317). The collecting cylinder (315) has a connecting component (319) fixedly connected on the side near the ventilation hole (318).

5. A spot welding device for metal processing according to claim 4, characterized in that: The bottom of the collection box (311) is fixedly connected to the top of the top plate (323), the side of the baffle (312) away from the collection cylinder (315) is fixedly connected to the inner side of the collection box (311), and the diameter of the feed hole (317) is larger than the diameter of the ventilation hole (318).

6. A spot welding device for metal processing according to claim 4, characterized in that: The connecting assembly (319) includes a connecting frame (3191), the side of which is fixedly connected to the side of the collecting cylinder (315) near the ventilation hole (318), the two sides of which are fixedly connected to the inside of the collecting box (311), the middle of which is fixedly connected to a connecting pipe (3192), the end of which is away from the connecting frame (3191) is fixedly connected to a corrugated pipe (33), and the inside of which is fixedly connected to a blocking kit (3193).

7. A spot welding device for metal processing according to claim 6, characterized in that: The blocking kit (3193) includes a blocking plate (31931), the side of the blocking plate (31931) is fixedly connected to the middle of the inner side of the connecting pipe (3192), a rotating blade (31932) is rotatably connected to the side of the blocking plate (31931), a blocking shaft (31933) is fixedly connected to the other end of the rotating blade (31932), a cleaning rod (31934) is fixedly connected to both sides of the blocking shaft (31933), the cleaning rod (31934) is in contact with the side of the blocking plate (31931), and a cleaning rod (31935) is fixedly connected to both sides of the blocking shaft (31933) away from the cleaning rod (31934).

8. A spot welding device for metal processing according to claim 2, characterized in that: The filtration mechanism (34) includes a filter box (341), the bottom of which is fixedly connected to the top of the support plate (42). Ventilation plates (345) are fixedly connected to both sides of the filter box (341). A ventilation end (342) is fixedly connected to the middle of the filter box (341). The end of the ventilation end (342) away from the filter box (341) is fixedly connected to the end of the corrugated pipe (33) away from the collection box (311). Filter plates (344) are fixedly connected to both sides of the inner cavity of the filter box (341). A contact mechanism (346) is fixedly connected to the middle of the inner cavity of the filter box (341).

9. A spot welding device for metal processing according to claim 8, characterized in that: The contact mechanism (346) includes a contact housing (3461), both ends of which are fixedly connected to the two sides of the inner cavity of the filter box (341). An air intake fan (3462) is fixedly connected to the side of the contact housing (3461) near the ventilation end (342), and an exhaust fan (3463) is fixedly connected to the inner side of the contact housing (3461) away from the air intake fan (3462). Exhaust pipes (3464) are fixedly connected to both sides of the exhaust fan (3463), and an interceptor housing (3465) is fixedly connected to the other end of the exhaust pipes (3464). An installation shaft (3467) is fixedly connected to the other side of the interceptor housing (3465), and the other end of the installation shaft (3467) is fixedly connected to the side of the contact housing (3461). An interceptor net (3466) is fixedly connected to the inner side of the interceptor housing (3465). An interceptor plate (3469) is fixedly connected to the opposite ends of the air intake fan (3462) and the exhaust fan (3463). A rotating assembly (3468) is rotatably connected between the two interceptor plates (3469). An interceptor plate (3470) is fixedly connected to the inner side of the contact housing (3461).

10. A spot welding device for metal processing according to claim 9, characterized in that: The rotating assembly (3468) includes a rotating shaft (34682), the side of which is rotatably connected to the inner side of the second interceptor plate (3470). Rotating rods (34683) are fixedly connected to both sides of the rotating shaft (34682). A fixed rod (34684) is fixedly connected to the side of the rotating shaft (34682) away from the rotating rods (34683). A sliding shaft (34685) is slidably connected to the other end of the fixed rod (34684). A fixed shaft (34686) is fixedly connected to the other end of the sliding shaft (34685). The other end of the fixed shaft (34686) is fixedly connected to... A scraper (34687) is attached, and a connecting spring (34688) is sleeved on the sliding shaft (34685). One end of the connecting spring (34688) is fixedly connected to the fixed rod (34684), and the other end of the connecting spring (34688) is fixedly connected to the fixed shaft (34686). One end of the rotating shaft (34682) is fixedly connected to a second rotating blade (34681), and the other end of the rotating shaft (34682) is rotatably connected to a first interceptor plate (3469). The end of the second rotating blade (34681) away from the rotating shaft (34682) is rotatably connected to another first interceptor plate (3469).

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